한국수소및신에너지학회논문집 (Transactions of the Korean hydrogen and new energy society)

  • 제34권5호
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  • Pages.413-420
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  • 2023
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
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홀뮴 도핑된 TiO2를 이용한 광전기화학 수소 제조

Photoelectrochemical Hydrogen Production with Holmium-doped TiO2

  • 정현민 (한국에너지기술연구원 수소에너지연구소 수소연구단) ;
  • 김민서 (한국에너지기술연구원 수소에너지연구소 수소연구단) ;
  • 조혜경 (한국에너지기술연구원 수소에너지연구소 수소연구단) ;
  • 주현규 (한국에너지기술연구원 수소에너지연구소 수소연구단) ;
  • 강경수 (한국에너지기술연구원 수소에너지연구소 수소연구단) ;
  • 이광복 (충남대학교 에너지과학기술대학원) ;
  • 김한성 (연세대학교 화공생명공학과) ;
  • 윤재경 (한국에너지기술연구원 수소에너지연구소 수소연구단)
  • HYEONMIN JUNG (Hydrogen Research Department, Hydrogen Energy Institute, Korea Institute of Energy Research) ;
  • MINSEO KIM (Hydrogen Research Department, Hydrogen Energy Institute, Korea Institute of Energy Research) ;
  • HYEKYUNG CHO (Hydrogen Research Department, Hydrogen Energy Institute, Korea Institute of Energy Research) ;
  • HYUNKU JOO (Hydrogen Research Department, Hydrogen Energy Institute, Korea Institute of Energy Research) ;
  • KYOUNGSOO KANG (Hydrogen Research Department, Hydrogen Energy Institute, Korea Institute of Energy Research) ;
  • KWANGBOK YI (Chungnam National University Graduate School of Energy Science and Technology) ;
  • HANSUNG KIM (Department of Chemical and Biomolecular Engineering, Yonsei University) ;
  • JAEKYUNG YOON (Hydrogen Research Department, Hydrogen Energy Institute, Korea Institute of Energy Research)
  • 투고 : 2023.09.15
  • 심사 : 2023.10.16
  • 발행 : 2023.10.30
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초록

Holmium-doped TiO2 nanotubes (Ho-TNTs) were manufactured through anodization treatment and electrochemical deposition, and optimization experiments were conducted using various Holmium doping concentrations and time as variables. Surface as well as electrochemical characteristics were analyzed to study the prepared photocatalysts. Ho-TNTs were found to exist only in anatase phase through X-ray diffraction analysis. Ho-TNTs with 0.01 wt% 100 seconds shows a photocurrent density of 3.788 mA/cm2 and an effective photo-conversion efficiency (PCE) of 4.30%, which is more efficient than pure TiO2 nanotubes (pure-TNTs) (at bias potential 1.5 V vs. Hg/HgO). The photocatalytic activity of the aforementioned Ho-TNTs for hydrogen production was evaluated with the result of -29.20 µmol/h·cm2.

키워드

과제정보

본 연구는 국토교통부/국토교통과학기술진흥원의 지원을 받아 수행되었으며 이에 감사드립니다(과제번호 RS-2021-KA163280).

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